Steffan Søndermark Fallesen (born 1981) is an

Internet entrepreneur An Internet entrepreneur is an owner, founder or manager of an Internet-based business. This list includes Internet company founders and people brought on to companies for their general business or accounting acumen, as is the case with some Chie ...

. He founded Servage Hosting (one of Germany's largest hosting companies) immediately after moving to

Flensburg Flensburg (; Danish, Low Saxon: ''Flensborg''; North Frisian: ''Flansborj''; South Jutlandic: ''Flensborre'') is an independent town (''kreisfreie Stadt'') in the north of the German state of Schleswig-Holstein. Flensburg is the centre of the ...

. He sold Servage Hosting to the Swedish firm Tele5 Voice Services AB in May 2007 and left the company in October 2009. His recent activity has been in investment banking and company development through his holding company Sondermark Holding GmbH. During his teenage years he built a portfolio of websites in his native language, such as popular chat sites and a free email service similar to

Hotmail Outlook.com is a webmail service that is part of the Microsoft 365 product family. It offers mail, Calendaring software, calendaring, Address book, contacts, and Task management, tasks services. Founded in 1996 by Sabeer Bhatia and Jack Smit ...

. For years these properties were hugely popular and among the most visited sites in

Denmark ) , song = ( en, "King Christian stood by the lofty mast") , song_type = National and royal anthem , image_map = EU-Denmark.svg , map_caption = , subdivision_type = Sovereign state , subdivision_name = Danish Realm, Kingdom of Denmark ...

. After identifying problems with the

Java Java (; id, Jawa, ; jv, ꦗꦮ; su, ) is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea to the north. With a population of 151.6 million people, Java is the world's List ...

implementation in

Microsoft Windows Windows is a group of several proprietary graphical operating system families developed and marketed by Microsoft. Each family caters to a certain sector of the computing industry. For example, Windows NT for consumers, Windows Server for serv ...

, by exploiting these erroneous implementations he was able to identify cyber criminals, even while using proxy servers. This system is known to have been actively used by the

Danish Security and Intelligence Service Politiets Efterretningstjeneste (PET) (literally: Police Intelligence Service, official name in English: Danish Security and Intelligence Service, or DSIS) is the national security and intelligence agency of Denmark. The agency focuses solely o ...

(PET) and likely other entities.

References

External links

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of Steffan Söndermark Fallesen 1981 births Living people Businesspeople in computing People from Flensburg {{Germany-business-bio-stub